How does a musician express his/her fellings through music, especially with the Blues????

Music is very representational of peoples emotions and feelings and has been over the course of history. People have written music to share their feelings, thoughts, and to tell stories.

Blues originated from African slaves in the south. They wrote music and sang while they worked in the fields. They put their feelings of back breaking labor into words. During this time, their singing was called "field hollers" and served as the origination of blues music.

After the civil war many black men went on to work as musicians. The music they sang was very soulful and emotional and focused on the life of the typical black American. They sang about  everyday life, including hard work, love, poverty, drinking, railroads, etc.